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Βιβλία Βιβλία 101 - 110 από 188 για These are usually accounted six in number, viz. the Lever, the Wheel and Axle, the....
" These are usually accounted six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw. "
A Practical Treatise on Arithmetic ...: Combining the Useful Properties of ... - Σελίδα 246
των George Leonard (jr.) - 1841 - 340 σελίδες
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The Elements of Natural Philosophy: For the Use of Schools and Academies

Edwin James Houston - 1880 - 320 σελίδες
...work that can be done by changing the time in which it is done. The mechanical powers are six, viz., the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. These are all modifications of the lever or of the inclined plane. The wheel...

Elementary Treatise on Natural Philosophy, Μέρος 4

Augustin Privat-Deschanel - 1880 - 1069 σελίδες
...applications of the foregoing principles; and we shall begin with the so-called " mechanical powers," namely, the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. 56. Lever. — Problems relating to the lever are usually most conveniently solved...

The Bryant and Stratton Business Arithmetic

H. Bryant - 1881
...moving at the rate of 80 ft. per second ? 777. Mechanical Powers. — 1. The mechanical powers are the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw. 2. The Lever is a solid bar turning upon a pivot. 8. The pivot is called its...

Essays on the kindergarten, a selection of lects. read before the London ...

Essays - 1881
...ILLUSTRATE THE MECHANICAL POWERS. A Box of Working Models, of the Six Simple Mechanical Powers : namely, the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw ; with Description, Experiments, and Engravings. (These models are accurately...

Intermediate Lessons in Natural Philosophy

Edwin James Houston - 1881 - 199 σελίδες
...work can be done by any machine than that expended in working or moving it. The mechanical powers are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. In a lever of the first class, the fulcrum is between the power and the weight....

Elements of Natural Philosophy: For the Use of Schools and Academies

Joseph Anthony Gillet, William James Rolfe - 1881 - 313 σελίδες
...complicated, is made up of a very few elements, called simple machines, or mechanical powers. These are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. The force applied to work the machine is called the power ; and the resistance...

A course of elementary reading in science and literature, compiled by J.M. M ...

James Melville M'Culloch - 1882
...machines, which are called the mechanical powers, are six in number, and have the following names, — the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw. Every one has seen men raising a stone by means of a bar of iron. This bar is...

An Elementary Treatise on Mechanics

C. J. Kemper - 1882 - 265 σελίδες
...point, practically available at another, are called the mechanical powers. Amongst them may be reckoned the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw. It will be seen, however, that these six may be reduced in principle to two,...

Fourth Reader of the Popular Series

Marcius Willson - 1883
...well, we must know all about tools and their uses, and all about the mechanical powers, — such as the lever, the wheel and axle, the pulley, the inclined plane, the screw, and the wedge. 7. "And then we must know all about the different movements given to machinery by the various uses...

Science Evenings with the Young

Selina A. Bower - 1883 - 102 σελίδες
...one of the six mechanical powers. Let me see if I remember them, it is so long since I learned them. The lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. All these six forces are most valuable to man, as they give him power over motionless...




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